%------------------------------------------------------------------------------ % File : Otter---3.3 % Problem : LAT151-1 : TPTP v8.1.0. Released v3.1.0. % Transfm : none % Format : tptp:raw % Command : otter-tptp-script %s % Computer : n003.cluster.edu % Model : x86_64 x86_64 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz % Memory : 8042.1875MB % OS : Linux 3.10.0-693.el7.x86_64 % CPULimit : 300s % WCLimit : 300s % DateTime : Wed Jul 27 13:02:02 EDT 2022 % Result : Unknown 6.51s 6.78s % Output : None % Verified : % SZS Type : - % Comments : %------------------------------------------------------------------------------ %----No solution output by system %------------------------------------------------------------------------------ %----ORIGINAL SYSTEM OUTPUT % 0.06/0.12 % Problem : LAT151-1 : TPTP v8.1.0. Released v3.1.0. % 0.06/0.13 % Command : otter-tptp-script %s % 0.12/0.34 % Computer : n003.cluster.edu % 0.12/0.34 % Model : x86_64 x86_64 % 0.12/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz % 0.12/0.34 % Memory : 8042.1875MB % 0.12/0.34 % OS : Linux 3.10.0-693.el7.x86_64 % 0.12/0.34 % CPULimit : 300 % 0.12/0.34 % WCLimit : 300 % 0.12/0.34 % DateTime : Wed Jul 27 08:26:56 EDT 2022 % 0.12/0.34 % CPUTime : % 6.51/6.78 ----- Otter 3.3f, August 2004 ----- % 6.51/6.78 The process was started by sandbox on n003.cluster.edu, % 6.51/6.78 Wed Jul 27 08:26:56 2022 % 6.51/6.78 The command was "./otter". The process ID is 4384. % 6.51/6.78 % 6.51/6.78 set(prolog_style_variables). % 6.51/6.78 set(auto). % 6.51/6.78 dependent: set(auto1). % 6.51/6.78 dependent: set(process_input). % 6.51/6.78 dependent: clear(print_kept). % 6.51/6.78 dependent: clear(print_new_demod). % 6.51/6.78 dependent: clear(print_back_demod). % 6.51/6.78 dependent: clear(print_back_sub). % 6.51/6.78 dependent: set(control_memory). % 6.51/6.78 dependent: assign(max_mem, 12000). % 6.51/6.78 dependent: assign(pick_given_ratio, 4). % 6.51/6.78 dependent: assign(stats_level, 1). % 6.51/6.78 dependent: assign(max_seconds, 10800). % 6.51/6.78 clear(print_given). % 6.51/6.78 % 6.51/6.78 list(usable). % 6.51/6.78 0 [] A=A. % 6.51/6.78 0 [] meet(X,X)=X. % 6.51/6.78 0 [] join(X,X)=X. % 6.51/6.78 0 [] meet(X,join(X,Y))=X. % 6.51/6.78 0 [] join(X,meet(X,Y))=X. % 6.51/6.78 0 [] meet(X,Y)=meet(Y,X). % 6.51/6.78 0 [] join(X,Y)=join(Y,X). % 6.51/6.78 0 [] meet(meet(X,Y),Z)=meet(X,meet(Y,Z)). % 6.51/6.78 0 [] join(join(X,Y),Z)=join(X,join(Y,Z)). % 6.51/6.78 0 [] meet(X,join(Y,meet(Z,join(X,U))))=meet(X,join(Y,meet(Z,join(U,meet(X,Z))))). % 6.51/6.78 0 [] meet(a,join(b,meet(c,join(a,d))))!=meet(a,join(b,meet(c,join(b,join(d,meet(a,c)))))). % 6.51/6.78 end_of_list. % 6.51/6.78 % 6.51/6.78 SCAN INPUT: prop=0, horn=1, equality=1, symmetry=0, max_lits=1. % 6.51/6.78 % 6.51/6.78 All clauses are units, and equality is present; the % 6.51/6.78 strategy will be Knuth-Bendix with positive clauses in sos. % 6.51/6.78 % 6.51/6.78 dependent: set(knuth_bendix). % 6.51/6.78 dependent: set(anl_eq). % 6.51/6.78 dependent: set(para_from). % 6.51/6.78 dependent: set(para_into). % 6.51/6.78 dependent: clear(para_from_right). % 6.51/6.78 dependent: clear(para_into_right). % 6.51/6.78 dependent: set(para_from_vars). % 6.51/6.78 dependent: set(eq_units_both_ways). % 6.51/6.78 dependent: set(dynamic_demod_all). % 6.51/6.78 dependent: set(dynamic_demod). % 6.51/6.78 dependent: set(order_eq). % 6.51/6.78 dependent: set(back_demod). % 6.51/6.78 dependent: set(lrpo). % 6.51/6.78 % 6.51/6.78 ------------> process usable: % 6.51/6.78 ** KEPT (pick-wt=23): 2 [copy,1,flip.1] meet(a,join(b,meet(c,join(b,join(d,meet(a,c))))))!=meet(a,join(b,meet(c,join(a,d)))). % 6.51/6.78 % 6.51/6.78 ------------> process sos: % 6.51/6.78 ** KEPT (pick-wt=3): 3 [] A=A. % 6.51/6.78 ** KEPT (pick-wt=5): 4 [] meet(A,A)=A. % 6.51/6.78 ---> New Demodulator: 5 [new_demod,4] meet(A,A)=A. % 6.51/6.78 ** KEPT (pick-wt=5): 6 [] join(A,A)=A. % 6.51/6.78 ---> New Demodulator: 7 [new_demod,6] join(A,A)=A. % 6.51/6.78 ** KEPT (pick-wt=7): 8 [] meet(A,join(A,B))=A. % 6.51/6.78 ---> New Demodulator: 9 [new_demod,8] meet(A,join(A,B))=A. % 6.51/6.78 ** KEPT (pick-wt=7): 10 [] join(A,meet(A,B))=A. % 6.51/6.78 ---> New Demodulator: 11 [new_demod,10] join(A,meet(A,B))=A. % 6.51/6.78 ** KEPT (pick-wt=7): 12 [] meet(A,B)=meet(B,A). % 6.51/6.78 ** KEPT (pick-wt=7): 13 [] join(A,B)=join(B,A). % 6.51/6.78 ** KEPT (pick-wt=11): 14 [] meet(meet(A,B),C)=meet(A,meet(B,C)). % 6.51/6.78 ---> New Demodulator: 15 [new_demod,14] meet(meet(A,B),C)=meet(A,meet(B,C)). % 6.51/6.78 ** KEPT (pick-wt=11): 16 [] join(join(A,B),C)=join(A,join(B,C)). % 6.51/6.78 ---> New Demodulator: 17 [new_demod,16] join(join(A,B),C)=join(A,join(B,C)). % 6.51/6.78 ** KEPT (pick-wt=21): 18 [] meet(A,join(B,meet(C,join(A,D))))=meet(A,join(B,meet(C,join(D,meet(A,C))))). % 6.51/6.78 Following clause subsumed by 3 during input processing: 0 [copy,3,flip.1] A=A. % 6.51/6.78 >>>> Starting back demodulation with 5. % 6.51/6.78 >>>> Starting back demodulation with 7. % 6.51/6.78 >>>> Starting back demodulation with 9. % 6.51/6.78 >>>> Starting back demodulation with 11. % 6.51/6.78 Following clause subsumed by 12 during input processing: 0 [copy,12,flip.1] meet(A,B)=meet(B,A). % 6.51/6.78 Following clause subsumed by 13 during input processing: 0 [copy,13,flip.1] join(A,B)=join(B,A). % 6.51/6.78 >>>> Starting back demodulation with 15. % 6.51/6.78 >>>> Starting back demodulation with 17. % 6.51/6.78 ** KEPT (pick-wt=21): 19 [copy,18,flip.1] meet(A,join(B,meet(C,join(D,meet(A,C)))))=meet(A,join(B,meet(C,join(A,D)))). % 6.51/6.78 Following clause subsumed by 18 during input processing: 0 [copy,19,flip.1] meet(A,join(B,meet(C,join(A,D))))=meet(A,join(B,meet(C,join(D,meet(A,C))))). % 6.51/6.78 % 6.51/6.78 ======= end of input processing ======= % 6.51/6.78 % 6.51/6.78 =========== start of search =========== % 6.51/6.78 % 6.51/6.78 % 6.51/6.78 Resetting weight limit to 13. % 6.51/6.78 % 6.51/6.78 % 6.51/6.78 Resetting weight limit to 13. % 6.51/6.78 % 6.51/6.78 sos_size=686 % 6.51/6.78 % 6.51/6.78 Search stopped because sos empty. % 6.51/6.78 % 6.51/6.78 % 6.51/6.78 Search stopped because sos empty. % 6.51/6.78 % 6.51/6.78 ============ end of search ============ % 6.51/6.78 % 6.51/6.78 -------------- statistics ------------- % 6.51/6.78 clauses given 796 % 6.51/6.78 clauses generated 845175 % 6.51/6.78 clauses kept 829 % 6.51/6.78 clauses forward subsumed 280640 % 6.51/6.78 clauses back subsumed 0 % 6.51/6.78 Kbytes malloced 6835 % 6.51/6.78 % 6.51/6.78 ----------- times (seconds) ----------- % 6.51/6.78 user CPU time 4.75 (0 hr, 0 min, 4 sec) % 6.51/6.78 system CPU time 0.01 (0 hr, 0 min, 0 sec) % 6.51/6.78 wall-clock time 7 (0 hr, 0 min, 7 sec) % 6.51/6.78 % 6.51/6.78 Process 4384 finished Wed Jul 27 08:27:03 2022 % 6.51/6.78 Otter interrupted % 6.51/6.78 PROOF NOT FOUND %------------------------------------------------------------------------------